Gearing for cigarette-filling machines.



M. C. 'GRAHL. GEARING FOR CIGARETTE HLUNG MACHINES.

' 'APPLICATION FILED NOV. 20. 1314.

1,162,478. Patented Nov. 30, 1915.

COLUMBIA PLANOURAPH C0, WASHINGTON D c man snares ra'rnn'r UFFTQEO MAX CLEMENS GRAHL 0'5 DRESDEN-LGBTAU, GERMANY, AS$IGNQR TO UNIVERSELLE CIGARETTEN-MASCHINEN-INDUSTRIE OTTO BERGS'ERASSER AKTIEN- GESELLSCHAFT, OF DRESDEN-LOBTAU, GERMANY.

GEARING FOR CIGARETTE-FILLING MACHINES.

ineaare.

Specification of Letters Patent.

Patented Nov. 3-5, 19315.

Application filed November 20, 1914. Serial No. 873,140.

To all whom it may concern:

Be it known that 1, MAX Grim-inns GRAHL, a citizen of the Kingdom of Saxony, German Empire, residing at Altlobtau 22, Dresden-Lobtau, in the Kingdom of Saxony, in said Empire, have invented certain new and useful Improvements in Gearing for Cigarette-Filling Machines, of which the following is a specification.

Gearing for cigarette-filling machines, as is well known, are provided with drums which are provided with chambers at their peripheries, each chamber receiving one c1garette. The drums must be turned slowly and by degrees, so as to place each single chamber of the filling mechanism successively in position. During the time in which the filling of a cigarette takes place, the drum, as is well known, must not be moved, but after that, it must be given another quick turn. Hence it is very important that the chambers arranged at the periphery of the drum take an exact position in regard to the filling mechanism after the successive further turning of the drum, because the cigarettes can only be made properly with the mechanism in this position. In the former driving arrangements for the drum provided with ratchet wheels, it often happenedthat the drum shaft was turned too far, and frequent attention had to be given so as to avoid this.

The invention aims at providing a perfectly reliable driving arrangement for the drum shaft, which is moved intermittently. For this purpose the well-known worm and wheel drive is employed, in which the screw is turned uniformly but at the same time moved axially backward and forward by a controlling-gear, in order to obtain an irregular turning of the shaft of the spur wheel on which the drum-shaft is fixed. It is clear that with this form of screw drive, there is an occasional pause in the motion of the drum, during the backward or forward movement of the worm-wheel, if the axial movement of the worm-wheel corresponds to the pitch of the worm, as in this case the worm wheel remains stationary. If the axial shifting is accelerated during the backward and forward movement, then there is during this time an accelerated turning of the worm wheel and therefore, also of the drum of the cigarette-filling machine. The guiding-coupling, of the screw spur wheel and the spiral wheel makes any mistake in turning these parts quiteimpossible. 5

An embodiment of the invention is shown in the annexed description and drawings, of which,

Figure 1 is a side view; Fig. 2 is a front view; and, Fig. 3 is a top view.

Similar reference letters indicate the same parts.

On the shaft of the drum n is the wormwheel I) which meshes with the worm c. The shaft of the worm-wheel is in the bearing a and can be moved longitudinally. The top of the shaft d supports a spur wheel 7 which remains in constant mesh with a cog-wheel g. The cog-wheel 9 causes a continuous revolution of the shaft d. The sides of the spur wheel f are formed into curved cams h and h. The rollers 70 and 7c coact with these cams h and h, and these rollers are on fixed axles on bearing Z but are adjustable and revoluble. The top roller 70 is arranged so that it can be lowered, so as to enable a sure grip of the rollers with the cams even after the cams have been worn down after use. It is now clear that through the cams 72 h a raising and lowering of the shaft (Z is produced. The cams are formed so that they cause a lowering of the worm c and its shaft (Z during a large part of a revolution, and indeed this shifting of the axle corresponds exactly to the rise by the spiral wheels so that no movement is imparted to worm wheel Z), which remains stationary during the lowering of the shaft (Z. During a short part of the period of a revo lution, the cams h h are so formed that a sudden movement of the shaft (Z takes place with great rapidity. In consequence of this lifting of shaft (Z the worm wheel 5 is turned by jerks. As the worm and worm wheel are in mesh, the jerky turning of the drum must, of course, stop immediately as soon as the rise of the roller (Z is completed, when it be gins to descend. To turn the drum too much is thus quite impossible.

I claim 1. In a cigarette-filling machine, a driving mechanism comprising a worm, a wormwheel in mesh therewith, means for revolving the worm, and means for axially moving the worm during the revolution thereof.

2. In a cigarette-filling machine, a driving mechanism comprising a- Worm, a Worm- Wheel in mesh therewith, means for revolving said Worm, and means for axially movmg said Worm during a portion of the revolution thereof to such an extent as to neutralize the effect of therevolution of said Worm upon the said Worm-Wheel in mesh therewith, and maintain said Worm-Wheel stationary.

8. In a cigarette-filling machine, a driving mechanism comprising a Worm, a Wor Copies of this patent may be obtained for five cents each, by addressing the Washington, D. 0.

Wheel in mesh therewithymeans for driving the Worm, a shaft for the Worm, cams mounted on the shaft of said Worm, and r01l- 15 ers coactinv with said cams to move said Worm axialTy during the revolution thereof.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

MAX OLEMEN S GRAHL. WVitnesses:

GUSTAV BRUNO MI'JLLER, CLARE SIMON.

"Commissioner of Patents. 

